Control file access
Dedicated hooks for file read and write operations — enforce access policies, trigger linting, or audit file changes
Baseline Widely available Fully supported by every tracked agent since Mar 2026, when Codex added it. Based on web.dev's Baseline
Tool-Specific Hooks Hooks & Lifecycle
Supported
Partial
No
Unknown
Not released
GitHub Copilot Current · Oct 2026 
OpenCode Current · Oct 2026 1.0.38 - 2.1.311
0.117.0 - 0.164.0
0.0.396 - 1.0.103
2.4 - 3.27
0.3.114 - 1.19.4
0.2.31 - 1.0.37
0.2.0 - 0.116.0
0.0.374 - 0.0.395
1.7 - 2.0
0.1.148 - 0.3.102
—
—
—
0.45 - 1.3
0.1.30 - 0.1.146
Supported by all 5 agents.
HoverTap any cell for version details.
Agent event mapping
Sub-capabilities
- Pre-read: restrict which files the agent can access
- Post-write: trigger linting, formatting, or validation after edits
- Cursor: separate events for agent chat and Tab completions